Geomagnetic intensity and direction for the last 14 ka recorded in Bering Sea core

doi:10.6038/cjg20130920

	Geomagnetic intensity and direction for the last 14 ka recorded in Bering Sea core
	Ge Shu-Lan 1,2; Shi Xue-Fa 1; Huang Yuan-Hui 1; Chen Zhi-Hua 1; Liu Jian-Xing 3; Yan Shi-Juan 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2013-09-01
卷号	56 期号:9 页码:3071-3084
关键词	Arctic Bering Sea Relative paleointensity of geomagnetic field Inclination Gothenburg event
ISSN号	0001-5733
DOI	10.6038/cjg20130920
文献子类	Article
英文摘要	Paleomagnetic and rock magnetic investigation were undertaken in a continental slope core B5-4 in the Bering Sea for the purpose of acquiring intensity and direction of the geomagnetic field. The results are as follows. (1) The magnetic properties are uniform except for the finer magnetic grain size of the upper 0 similar to 0. 44 m and the relative paleointensity in the core is highly consistent with that of ODP983. (2) According to the correlation between relative paleointensity in core B5-4 and ODP983 and an AMS C-14 dating of foraminifera at 4. 54 similar to 4. 56 m, three correlation points can be further determined, thus the age model in core B5-4 was obtained. (3) The declination and inclination in core B5-4 agree highly with that of high latitude records, for example Lake Baikal, North America and Europe and the spherical harmonic model of local geomagnetic field, which provide additional tie points for the age model and a near linear sedimentation for the last 14 ka was revealed. (4) The inclination correlation between B5-4 and two cores from the continental.shelf of east China suggests that the two discrete sections of shallow inclinations in core B5-4 are likely the Gothenburg event and the early diagenesis or smoothing effect might be the cause of shallow not negative inclination. The above results prove that both relative paleointensity and direction can be obtained in appropriate sediment of Bering Sea that serves as time marker. This is very helpful in paleoenvironmental and paleoceanographic study in Arctic and subarctic areas considering the awful scarcity of age information due to the shortage of calcerous tests and shells.
WOS关键词	PALEOMAGNETIC SECULAR VARIATION ; RELATIVE PALEOINTENSITY ; INTERMEDIATE WATER ; SEDIMENTS ; FIELD ; CHRONOSTRATIGRAPHY ; EXCURSIONS ; STACK ; KYR
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000328723600020
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88045]
专题	中国科学院地质与地球物理研究所
通讯作者	Ge Shu-Lan
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Ge Shu-Lan,Shi Xue-Fa,Huang Yuan-Hui,et al. Geomagnetic intensity and direction for the last 14 ka recorded in Bering Sea core[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(9):3071-3084.
APA	Ge Shu-Lan,Shi Xue-Fa,Huang Yuan-Hui,Chen Zhi-Hua,Liu Jian-Xing,&Yan Shi-Juan.(2013).Geomagnetic intensity and direction for the last 14 ka recorded in Bering Sea core.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(9),3071-3084.
MLA	Ge Shu-Lan,et al."Geomagnetic intensity and direction for the last 14 ka recorded in Bering Sea core".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.9(2013):3071-3084.